Enduring Battle: American Soldiers in Three Wars, 1776-1945. 2 p.m. The Civil War Interpretive Center at Historic Blenheim, 3610 Old Lee Highway, Fairfax. Talk and book signing by Dr. Christopher H. Hamner, Assistant Professor of History at George Mason University, on the changing experiences of ground combat from the Revolutionary War to the Civil War to World War II. Free. 703-591-0560.